<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>

<body>

    <div id="app">
        {{myname}}
    </div>
    <script>
        var app = Vue.createApp({
            data() {
                return {
                    myname: "张三"
                }
            }
        }).mount('#app')
    </script>
</body>

</html>